Entrance-door lock.



A. ARENS.

ENTRANCE DOOR LOCK.

APPLICATION FILED DEG. zo, 1909.

Patented May 31, i910.

2 SHEETS-SHEET 1.

A. x-RENS. ENTRANCE DOOR LOCK.

APPLICATION FILED DEG. 20, 1909.

l @5&83@ mmm my 31, 1910.

2 SHEETS-SHEET 2.

@wi/memes I A woe who@ @Nidi Tia E@ PATENT AUGUST ARENS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO P. &; F. CORBIN, OF

NEW BRITAIN, CONNECTICUT, A CGRPGRATION OF CONNECTICUT.

ENTRANCE-DOOR LOCK.

To all whom 'it may concern:

Be it known that T, AUGUST Anims, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Entrance-Door Locks, of which the following is a full, clear, and eXact description.

My invention relates to improvements in entrance door locks, the object being to provide means for deadlocking the lock against admission from the outside.

Other advantages of my invention will be apparent to the mechanic skilled in the art from a reading of the following specitication and an examination of the accompanying drawings, in which,-

Figure 1 is a front view of my invention as applied to a mortise lock, the cap of the case being removed; Fig. 2 is a view of a portion of the cap for the case shown in Fig. 1; Fig. 3 is a view similar to Fig. 1 but showing certain parts in a different position, certain other parts being removed; Fig. 4 is a section of the lock on substantially the plane of the line -m Fig. 3, showing the parts as they appear in said figure; Fig. 5 is a side elevation of a certain detail; Figs. 6 and 7 are different views of another detail. Figs. 8 and 9 are different views of still another detail; Figs. 10 and 11 are different views of still another detail.

1 represents the case of a mortise lock; 2 is the face plate; 3 is the cap or cover for the case 1; 4 is a latch-bolt projecting through the face plate 2; 5 is an actuator for a latch dog.

6 is a latch dog pivoted at 7.

8 is a spring which normally tends to move the latch dog into the position indicated in Fig. 3 wherein its front end will stand to the rear of latch 4 and block or dog it against repression. At the rear of the actuator 5 is a depending arm 9 which bears against a cam surface 10 on the rear of the latch dog 6.

11 is a cross-head on the rear end of the tail of the latch-bolt 4.

12 is a slide having a head 12L arranged to engage and retract the cross head 11 of the latch-bolt when the slide 12 is retracted.

13 is a lever pivoted at 14 and arranged to be operated by manual operating devices Specification of Letters Patent.

Application filed December 2G, 1909.

Patented May 31, 1919.

semi No. 534,058.

such as knobs or thumb levers. In the present instance the lever 13 is designed to be operated by a manually controlled thumb lever.

15 is a lifter which cooperates with lever 13 and is operable'from the inner side of the door. This lifter is always free to be lifted for the purpose of swinging back the lever 13 and withdrawing the latch-bolt 4 through the medium of the slide 12.

16 is another lifter also cooperating with the lever 13 and which is arranged to be operated from the outside of the door. This lifter 16 has an extension 17. 18 is a dog slidable to and fro, being mounted entirely within case 1 and in suitable guideways. As shown in Fig. 1, the stop 18 is in the o position or free of the extension 17 so as to permit the lifter 16 to be operated. As shown in Fig. 3, said stop is in the on position, serving to block the extension 17 and lifter 16 against operation.

19 is a lever pivoted at 7 and having a hooked upper end 20.

21 represents the case of a cylinder lock which is designed to be secured in a threaded opening in the side of case 1. This cylinder lock 21 has a roll-back 22, the arm of said roll-back being so placed and of such length as to engage only the extension 2() of the lever 19 as it is rotated. This rollback 22 is operated by means of a key suitable to the lock 21 and may be turned so as to engage the extension 20 on one side or the other, as the case may be and rock the lever 19 to advance or retract the dog 18. Directly opposite the cylinder lock 21 and located in an opening in the cap 3 of the lock case is another cylinder lock 23 having a roll-back 24. This roll-back, when revolved by a key from the outside of the door, swings freely past the end extension 2O and engages the incline 25 of the stop 6, so as to first tilt said stop to the position indicated in Fig. 1 against the iniluence of spring 8, freeing the latch 4. Continued rotation brings roll-back 24 against cross head 11 and reti-acts the same, withdrawing 26 also shifts. the stop 6 from. the latch dogging position shown in Fig. 3 to tlieifree position shown in Fig. 1.

iso asy to block the lifter 16. As-this 1i'fter16 is operable only from the outside of a door by a knob or latch-bolt, it followsthat entrance .from the outside can not-now be effected in this manner. Anyone on the inside can, however, pass ont-.freely through themedium ofthe lifter 15, which is 4free vat alltnnes.

Then said-lifterl islifted it rocks lever 13, drawsback slide 12, which latter first frees stop6 and thenadraws backlatch .through the engagement ofthe slide head 12L .with the crosslhead :11.

The usual springs restore these partsto their normalposition. fIf, while the lifter 16 is blocked, anyone .desiresto enter from the outside,he.may do Hso by means of a suitable key inseitedin the `loclr23 and turned inthe manner above vde- `scribed to retract Vlatch 4.

V:It Vwill be observed that-theioll-back 22 isshorter than therollrback 24E, thisbeing so designed that it .will not encounter the ofSt incline 25 of-the kstop 6 during the operation of throwing the stop 18 to the on position, even vthough whenthis act is lbeing performedthe door is closed and said stop stands in Va position to bloclrlthe repression (as distinguished from retraction) of 1the .latch-bolt .4. There is ka clear- ,anceA space Aback of thecrosshead 11 to per- 1mit the rollbilQk22-to pass freely.

The advantages of this construction are manifold. In inany'buildings it is desirable yat certain-times to dog the latch operating device located at the outer side of the door,

Vandto do lthis so e'ectively as.to .prevent accidental ,or unauthorized releasing of the doggingmechanism. Take, .for example, `1n

yascliool building. `Vihenthe assemblyhonr occurs, the janitor of the l.building .throws on .the dog 18. It is then beyond the powerof anyone savethe janitor to ,release `said dog since the same is controlled solely by his key. Vhere dogs are pro- .vided controlled eitherby a ythumb turn at .the inside of afdoor,.or by the well :known buttons ,at .the edge of l,the door projecting Ithrough ,the Aface plate, it is always' within the power of a Confederate to release the stop work. Not alone is there ,danger ythat .the dog 7 kmay be released by aconfederate :but it .not infrequently happensthatthevdog is unintentionally and accidentally released, thus defeating the purpose and value of Vclogging.mechanism asapplied to'flocks intended for this use. Not alone is this invention applicable to entrance doors for school buildings but it will be found of great value in connection with factories, stores and public buildings, where at certain times it is desirable to prevent admission from the outside save by the use of a suitable'lrey, leaving the latch mechanism, however, free to be operated from the inside should any occasion (such as a. panic or otherwise) arise demanding the opening of the door. It is possible, of course, inthis .arrangement to provide `only one key ifor .controlling the dogging mechanism or,.if desired,the same key adapted to operate` the cylinderiloclr v22 may be adaptedto control'theV dog Hfrom the inside ofthe door.

In Figs. 8 to 11 I have .shown different views of the details 415-16. .Itwillbe observed. that when theseparts are assembled,

the ylifter :1,6 can not be lifted without llifting the lifter 15, whereas the lifter 15 can vbe lifted without effect onythe lifter 16.

This action is due to the :fact that thelifter 16 has a Ashoulder 16a 'bearing .under a shoulder .15L on thelifter l15.

What I claim, is: 1. In a vlatch mechanism, a;latcli-b.0lt, an

automatic stop itherefor, an .actuator Acooperating withsaid stop, said. stop vengaging the vlatch .when usaid actuator is repressed, two separate latch retracting Vdevices lfor .operationrespectively ifrom opposite sides ofthe door, Va doggingdevicefor.oneof said latch retracting devices, @two independ- .ent they-controlled .devices ,operablefrom .oppositesides of the..doorone oflsaiddevices being varrangedto operate saiddogging` devicefthe, other devicebeing. arranged to. operatesaid latch stopto release the. same y andsaid latchv to retract .the same.

2. In a latch mechanism, walatch-bolt, an

vautomatic stop ttherefor, an .actuatorl cooperating .with said stop, .said .stop .engagingthe latch whensaid actuatorzis repressed,

`two separate latch .retracting .devices ffor operation respectively from opposite sides of the door, a doggingdevice for..one.ofsaid latch .retracting devices, ltwo independent llrey-contrfollcd devices operable from Joppo- `sit-e sides ofthe door, one of said devices being `arrangedto operate Asaid doggingdevice, the other device 'being arranged vto operate said latch stop ,to release :the same and then ,re tract the latch, said flreyvoperated devices being arranged directlyopposite to one another.

3. In a latch, a case andcap, alatchbolt,

a stop therefor, two .independent means for operating said latch-bolt, Ha *dog :for `oneof said loperating means, .said ldog ibeing inclosed in said case, two cylinder locks' y'carried by said case and cap arranged -oppositely, a key-controlled roll-back for each cylinder lock, one of said roll-backs being shorter than the other and arranged to operate said dog, the longer of said rollbacks being arranged to operate said stop and withdraw said latch.

4. In a latch, a case and cap, a latch-bolt, a stop therefor, two independent means for operating said latch-bolt, a dog for one of said operating means, said dog being inclosed in said case, two cylinder locks carried by said case and cap arranged oppositely, a key-controlled rolleback for each cylinder lock, one of said roll-backs being shorter than the other and arranged to operate said dog, the longer of said roll-backs being arranged to operate said stop and withdraw said latch, and means independent of the key-operated means for operating said stop by one of the two independent means for operating the latch-bolt.

5. In a lock, a case including a removable cap, two oppositely positioned lock-receiving openings in said case and cap, two cylinder locks carried therein, a roll-back carried by each of said cylinderl locks, one of said roll-backs being shorter than the other, latch mechanism, stop mechanism for said latch mechanism, the longer -of said arms being arranged to operate said stop and latch to retract the same, independent latch-operating mechanism, clogging mechanism therefor, the shorter roll-back being adapted to operate said dogging mechanism.

6. In a lock, latch mechanism, automatic stop mechanism for said latch operative to stop the latch when the door is closed, two independent means for retracting the latch connection between one of said means and said stop mechanism to operate the latter in ad- Vance of the retraction of the latch dogging mechanism for the other latch-operating means, said dog lng mechanism being contained Wholly within the case and operable by a key only, oppositely arranged key-controlled mechanism, independent roll-backs carried thereby, one roll-back being arranged to operate the latch, the other being arranged to operate said dog.

AUGUST ARENS. Witnesses:

G. ERNEST ROOT, WM. V. GALLEN. 

